Factors Influencing the Distribution of Northern Spotted Owls in the Eastern Cascades, Washington
| العنوان: | Factors Influencing the Distribution of Northern Spotted Owls in the Eastern Cascades, Washington |
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| المؤلفون: | Tracy L. Fleming, John A. Beebe, Larry L. Irwin, Craig Loehle |
| المصدر: | Northwestern Naturalist. 92:19-36 |
| بيانات النشر: | Northwestern Naturalist, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | education.field_of_study, biology, Range (biology), Ecology, Home range, Population, Elevation, biology.organism_classification, Geography, Habitat, Northern spotted owl, Vegetation type, General Earth and Planetary Sciences, Abies lasiocarpa, education, General Environmental Science |
| الوصف: | The Northern Spotted Owl (Strix occidentalis caurina) population is declining throughout its range in the United States and adjacent Canada and is facing increasing pressure from the invading Barred Owl (Strix varia). In this study, we characterize Spotted Owl habitat associations and develop 2 new habitat selection models for the eastern Washington Cascade Range. Topographic and habitat data were compiled at 2 scales (0.25 and 1.0 mi) around 224 Spotted Owl activity centers, or sites, and at 160 random locations in the same geographic region, and used to develop models for predicting owl distributions. Univariate analysis found that owl sites occurred below 5000-ft elevation and were more likely to occur as area in the >71% crown-cover class increased. Owl sites were found to be more likely to occur closer to streams and to be rare in the Subalpine Fir (Abies lasiocarpa) vegetation type. The 9–25″ tree size-class was a significant predictor of the distribution of owl sites. Habitat models were c... |
| تدمد: | 1938-5315 1051-1733 |
| DOI: | 10.1898/09-33.1 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::9ce900664486c7b92fe1cb21ddb5a6d1 https://doi.org/10.1898/09-33.1 |
| رقم الانضمام: | edsair.doi...........9ce900664486c7b92fe1cb21ddb5a6d1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19385315 10511733 |
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| DOI: | 10.1898/09-33.1 |